.
—I think 20 dollars for it is OK.
—No, I’d gladly pay _______ for it.
| A．twice as much | B．three times of what | C．the price twice | D．as much three times |
.
It _____ have been Tom that parked the car here, as he is the only one with a car.
| A．may | B．can | C．must | D．should |
.
Though money, his parents managed to send him to university.
| A．lacked | B．lacking of | C．lacking | D．lacked in |
.
The flu is believed by viruses that like to reproduce in the cells inside the human nose and throat.
| A．causing | B．being caused | C．to be caused | D．to have caused |
.
His mother suggested he ______ to see the doctor, because his pale face suggested he ____ ill.
| A．would go, had been | B．go, was | C．went, had been | D．must go, was |
.
What I need is _____ book that contains ______ ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a; the |